Dubin played at three colleges in four years, spending two seasons at Erie (N.Y.) CC and one each at Buffalo and Georgetown (Ky.). After he won NAIA All-America honors with a 2.09 ERA and 128 strikeouts in 94 2/3 innings as a senior in 2018, the Astros made him Georgetown's first Draft pick (13th round) in 21 years. He was a revelation in his first full pro season, limiting opponents to a .547 OPS while averaging 12.3 strikeouts in nine innings, mostly in high Class A.
Dubin has gained about 3 mph of velocity since turning pro and now deals with a 92-95 mph four-seam fastball that tops out at 97. Despite that added heat, his best pitch is a plus slider with high spin rates and so much movement that it has wiped out lefties and righties alike at lower levels. He also has improved his curveball and is working to upgrade his changeup.
Listed at 6-foot-1 and 154 pounds, Dubin is extremely skinny and about 50 pounds lighter than a typical big league starter. To remain in the rotation, he'll need to add some strength and refine his control and command so he can work deeper into games. His slider gives him a chance to become a high-leverage reliever, and he might throw even harder in shorter stints.